Inner Tube End Plug

Inner Tube End Plug – Repurpose a Cut Bicycle TubeThis simple yet functional plug is designed to seal the end of a cut bicycle inner tube, allowing it to be reused as a flexible rubber sleeve or seal. It's especially useful for custom DIY applications where an open tube isn't ideal.🛠️ Use Case:I personally use it to seal and secure a repurposed inner tube around the window plate of my portable air conditioner. The result is a tight, flexible, and airtight fit — perfect for keeping warm air out.🧩 Instructions:Clean the inside of the inner tube thoroughly to remove any talcum powder or residue.Lightly roughen the surface with sandpaper where the plug will be glued.Apply a strong rubber adhesive and press the plug firmly into place.Let it cure as instructed by the glue manufacturer.🖨️ Print Settings:Material: PLA or PETGNo supports requiredPrint in 100% infill for maximum strengthA small part with big potential — ideal for tinkerers, upcyclers, and DIYers looking to give inner